:root{--primary-color:#3498db;--primary-dark:#2980b9;--primary-light:#e1f0fa;--secondary-color:#2ecc71;--secondary-dark:#27ae60;--secondary-light:#e8f7e8;--accent-color:#9b59b6;--accent-dark:#8e44ad;--accent-light:#f4ebf8;--orange-light:#dc4424;--orange-dark:#ff3b00;--danger-color:#e74c3c;--warning-color:#f39c12;--info-color:#3498db;--success-color:#2ecc71;--background-color:#f0f8ff;--card-background:#ffffff;--border-color:#d0e0f0;--shadow-color:rgba(52,152,219,.15);--text-color:#2c3e50;--text-light:#34495e;--text-muted:#7f8c8d;--shadow-sm:0 2px 5px rgba(52,152,219,.1);--shadow-md:0 4px 8px rgba(52,152,219,.15);--shadow-lg:0 8px 16px rgba(52,152,219,.2);--spacing-xs:5px;--spacing-sm:10px;--spacing-md:15px;--spacing-lg:20px;--spacing-xl:30px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--transition:all .3s ease;--assessment-color:#e67e22;--assessment-dark:#d35400;--assessment-light:#fdecd1}body,html{margin:0;padding:0;background-color:var(--background-color);color:var(--text-color);font-family:'Rubik',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;font-size:16px;line-height:1.6}*{font-family:'Rubik',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;box-sizing:border-box}.main-container{max-width:1200px;width:95%;margin:var(--spacing-xl) auto;padding:0;background-color:var(--card-background);border-radius:var(--radius-md);box-shadow:var(--shadow-md);overflow:hidden;border:1px solid var(--border-color)}.heading{display:flex;flex-direction:column;padding:var(--spacing-xl);align-items:center;background:linear-gradient(to right,#f0f8ff,var(--primary-light),#f0f8ff);position:relative;text-align:center;margin-bottom:var(--spacing-xl);border-bottom:1px solid var(--border-color)}.heading:after{content:'';position:absolute;bottom:-1px;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--primary-color),var(--primary-dark))}.heading h2{font-size:clamp(26px,5vw,36px);margin:0;color:var(--primary-dark);font-weight:600;position:relative;padding-bottom:var(--spacing-md)}.heading h2:after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);height:3px;width:80px;background:linear-gradient(90deg,var(--primary-color),var(--accent-color))}.container{display:grid;grid-template-columns:repeat(1,1fr);gap:var(--spacing-lg);padding:0 var(--spacing-xl) var(--spacing-xl);background-image:radial-gradient(circle at 50% 50%,var(--primary-light) 1px,transparent 1px);background-size:30px 30px;background-position:0 0;background-color:var(--card-background)}@media (min-width:768px){.container{grid-template-columns:repeat(2,1fr)}}.level-box{background-color:var(--card-background);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:var(--spacing-lg);width:100%;position:relative;border:1px solid var(--border-color);overflow:hidden;display:flex;flex-direction:column;height:100%;transform:translateY(0) scale(1);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;animation:fadeInUp .6s cubic-bezier(.34,1.56,.64,1) forwards;animation-fill-mode:both;background-image:linear-gradient(135deg,rgba(255,255,255,.8) 0%,rgba(255,255,255,.9) 100%),url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%233498db' fill-opacity='.08'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");opacity:0}.level-box{opacity:0;animation:fadeInUp .6s cubic-bezier(.34,1.56,.64,1) forwards}.level-box::before{content:'';position:absolute;top:0;right:0;width:100px;height:100px;background:radial-gradient(circle at 100% 0%,var(--primary-light) 20%,transparent 75%);opacity:.4;z-index:0;transition:opacity .3s ease}.level-box.animation-complete{animation:none}.level-box:hover{animation:none;transform:translateY(-3px) scale(1.02)!important;box-shadow:var(--shadow-lg);border-color:var(--primary-light);z-index:2}.level-box:hover::before{opacity:.6}.level-box.animation-complete{animation:none!important}.level-box.animation-complete:hover{animation:none!important;transform:translateY(-3px) scale(1.02)!important}.level-box:after{content:'';position:absolute;left:0;top:0;height:4px;width:100%;background:linear-gradient(90deg,var(--primary-color),var(--accent-color))}.level-number{display:flex;align-items:center;justify-content:center;flex-direction:column;background:linear-gradient(135deg,var(--primary-color),var(--accent-color));color:white;border-radius:var(--radius-lg);width:80px;height:80px;font-weight:700;font-size:1.8rem;margin-bottom:var(--spacing-xl);box-shadow:var(--shadow-md);position:relative;z-index:1;line-height:1;padding:var(--spacing-xs)}.level-label{font-size:.7rem;font-weight:500;text-transform:uppercase;letter-spacing:1px;margin-top:4px;opacity:.9;display:block}.level-number:before{content:'LEVEL';font-size:.7rem;font-weight:500;text-transform:uppercase;letter-spacing:1px;margin-bottom:2px;opacity:.9}.level-number:after{content:none}.level-indicator{position:absolute;bottom:-10px;right:-15px;background-color:var(--card-background);border-radius:12px;padding:3px 8px;box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:3px;border:1px solid var(--border-color)}.segment{width:8px;height:8px;border-radius:2px;background-color:var(--border-color)}.segment.filled{background:linear-gradient(135deg,var(--primary-color),var(--primary-dark))}@keyframes shineEffect{0%{background-position:100% 100%}100%{background-position:0 0%}}.level-title-container{font-weight:600;font-size:2rem;color:var(--text-color);margin-bottom:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md);background-color:rgba(224,242,254,.3);border-left:4px solid var(--primary-color);border-radius:0 var(--radius-md) var(--radius-md) 0;position:relative;z-index:1}.level-description{font-size:1rem;margin:var(--spacing-md) 0;color:var(--text-light);line-height:1.6;flex-grow:1;padding:0 var(--spacing-xs);position:relative;z-index:1}.start-level-btn{display:inline-block;padding:14px 20px;background:linear-gradient(135deg,var(--primary-color),var(--accent-color),var(--primary-dark));background-size:200% 100%;color:white;border-radius:var(--radius-md);text-decoration:none;font-size:16px;font-weight:600;text-align:center;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;z-index:1;cursor:pointer;border:none;margin-top:auto;width:100%;transition:transform .3s ease,box-shadow .3s ease,background-position .6s ease}.start-level-btn:hover{background-position:right center;transform:translateY(-2px);box-shadow:var(--shadow-md)}.start-level-btn:after{content:' \2192';margin-left:8px;position:relative;z-index:1}.start-level-btn:before{content:'';position:absolute;top:-50%;right:-50%;bottom:-50%;left:-50%;background:linear-gradient(to bottom,rgba(255,255,255,0),rgba(255,255,255,.3) 50%,rgba(255,255,255,0));transform:rotateZ(60deg) translate(-5em,7.5em);opacity:0;z-index:0;transition:opacity .5s,transform .5s;pointer-events:none}.start-level-btn:hover:before{opacity:1;transform:rotateZ(60deg) translate(1em,-12em)}.start-level-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}60%{opacity:1;transform:translateY(-5px)}100%{opacity:1;transform:translateY(0)}}@keyframes skeletonPulse{0%{background-position:-468px 0}100%{background-position:468px 0}}.level-box.assessment{border:2px solid var(--assessment-color);border-left:3px solid var(--assessment-color);background:linear-gradient(135deg,#fef7f0 0%,#fdecd1 50%,#ffffff 100%);box-shadow:0 4px 15px rgba(230,126,34,.15);display:flex;flex-direction:column;position:relative;overflow:visible}.level-box.assessment::after{background:linear-gradient(90deg,var(--assessment-color),var(--assessment-dark))}.assessment-header{margin-bottom:var(--spacing-lg);display:flex;align-items:center}.assessment-badge{background:linear-gradient(135deg,var(--assessment-color),var(--assessment-dark));color:white;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-lg);font-weight:700;font-size:.85rem;letter-spacing:.5px;box-shadow:0 4px 12px rgba(230,126,34,.25);display:inline-block;text-transform:uppercase}.level-box.assessment .level-title-container{font-size:1.4rem;font-weight:700;color:var(--assessment-dark);margin-bottom:var(--spacing-md);line-height:1.3;border-left:none;background-color:transparent;padding:0}.level-box.assessment .level-description{color:#555;font-size:.95rem;margin-bottom:var(--spacing-lg);font-weight:500}.level-box.assessment .start-level-btn{background:linear-gradient(135deg,var(--assessment-color),var(--assessment-dark));color:white;border:none;font-weight:700;font-size:1rem;padding:var(--spacing-md) var(--spacing-lg);text-transform:uppercase;letter-spacing:.5px}.level-box.assessment .start-level-btn:hover{background:linear-gradient(135deg,var(--assessment-dark),#c2450c);transform:translateY(-3px);box-shadow:0 10px 25px rgba(230,126,34,.3)}.level-box.assessment .start-level-btn::after{background-color:rgba(255,255,255,.25)}.level-box.skeleton{animation:skeletonPulse 1.5s infinite ease-in-out;background:linear-gradient(90deg,var(--card-background) 0%,rgba(52,152,219,.1) 50%,var(--card-background) 100%);background-size:936px 100%;pointer-events:none;opacity:.6}.level-box.skeleton .level-number,.level-box.skeleton .level-title-container,.level-box.skeleton .level-description,.level-box.skeleton .start-level-btn{background-color:rgba(200,200,200,.3);border:none;color:transparent;cursor:default}@media (max-width:767px){.main-container{width:92%;margin:var(--spacing-lg) auto}.container{padding:0 var(--spacing-md) var(--spacing-md);gap:var(--spacing-md)}.level-box{transform:none!important}.level-box:hover{transform:translateY(-2px) scale(1.01)!important}.level-box.animation-complete:hover{transform:translateY(-2px) scale(1.01)!important}}.level-status{position:absolute;top:var(--spacing-sm);right:var(--spacing-sm);padding:4px 10px;border-radius:20px;font-size:.8rem;font-weight:500}.level-status.complete{background-color:var(--success-color);color:white}.level-status.locked{background-color:var(--warning-color);color:white}.level-status.current{background-color:var(--info-color);color:white}.loading-container{display:flex;justify-content:center;align-items:center;min-height:200px;padding:var(--spacing-md)}.loading-spinner{width:48px;height:48px;border:4px solid var(--primary-light);border-radius:50%;border-top-color:var(--primary-color);animation:spinner .8s linear infinite}@keyframes spinner{to{transform:rotate(360deg)}}.no-levels{text-align:center;padding:var(--spacing-xl);color:var(--text-light);font-size:18px;min-height:200px;display:flex;flex-direction:column;justify-content:center;align-items:center}